Which beta-2 bronchodilator is known as Xopenex?

Levalbuterol, marketed under the brand name Xopenex, is a beta-2 adrenergic agonist used primarily for the treatment of asthma and other chronic obstructive pulmonary diseases. It works by relaxing the muscles in the airways and increasing airflow to the lungs.

Xopenex is notable for being a stereoisomer of albuterol, which means it is derived from the same compound but is specifically formulated to have a different molecular structure that primarily targets the beta-2 adrenergic receptors. This targeted action can lead to fewer side effects compared to racemic albuterol.

Albuterol is a more common bronchodilator that delivers a mixture of both the active and inactive isomers, while pirbuterol and formoterol are different types of beta-2 agonists with varying properties and durations of action. Understanding the specificity of levalbuterol as Xopenex helps clinicians make informed choices in prescribing medications based on a patient's specific needs and responses to treatment.